Literature DB >> 21927530

Triethylsilyl Perfluoro-Tetraphenylborate, [Et(3)Si][F(20)-BPh(4)], a widely used Non-Existent Compound.

Matthew Nava1, Christopher A Reed.   

Abstract

The commonly used triethylsilyl per-fluoro-tetraphenylborate salt, [Et(3)Si(+)][F(20)-BPh(4) (-)], has been misidentified. As prepared, the cation is a hydride-bridged silane adduct [R(3)Si-H-SiR(3) (+)]. Under favorable circumstances it can be an effective source of the triethylsilylium ion Et(3)Si(+) but in the absence of a stabilizing base the potent electrophilicity of Et(3)Si(+) decomposes the "inert" F(20)-BPh(4) (-) counterion.

Entities:  

Year:  2011        PMID: 21927530      PMCID: PMC3172150          DOI: 10.1021/om200636u

Source DB:  PubMed          Journal:  Organometallics        ISSN: 0276-7333            Impact factor:   3.876


  19 in total

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5.  Crystallographic evidence for a free silylium ion.

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7.  Novel weak coordination to silylium ions: formation of nearly linear Si-H-Si bonds.

Authors:  Stephan P Hoffmann; Tsuyoshi Kato; Fook S Tham; Christopher A Reed
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8.  Allene formation by gold catalyzed cross-coupling of masked carbenes and vinylidenes.

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10.  Hydrodefluorination of perfluoroalkyl groups using silylium-carborane catalysts.

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  11 in total

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4.  Cationic Si-H-Si Bridges in Polysilanes: Their Detection and Targeted Formation in Stable Ion Studies.

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5.  Thermodynamic versus kinetic control in substituent redistribution reactions of silylium ions steered by the counteranion.

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6.  On Silylated Oxonium and Sulfonium Ions and Their Interaction with Weakly Coordinating Borate Anions.

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7.  Ga+-catalyzed hydrosilylation? About the surprising system Ga+/HSiR3/olefin, proof of oxidation with subvalent Ga+ and silylium catalysis with perfluoroalkoxyaluminate anions.

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8.  Dispersion-Energy-Driven Wagner-Meerwein Rearrangements in Oligosilanes.

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9.  Mechanism of the cooperative Si-H bond activation at Ru-S bonds.

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10.  Synthesis of a Counteranion-Stabilized Bis(silylium) Ion.

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